to raisin 

When one feels so uncomfortable in a situation that they begin to crinkle up, similar to that of a grape transforming into a raisin.

"Bro, when I saw Jessica yesterday after sleeping with her best friend, I felt so awkward that I started to raisin"

"I fell down a whole flight of stairs, and I felt so embarrassed that I crinkled up into a raisin right then and there"

to raisin by chirp_577 December 6, 2017

Grape to raisin 

A testicle party trick. With scrotum exposed, one will grasp firmly either testicle, and say to the audience "see? grape!" He then pushes it through the grasp in his hand, only holding onto the wrinkled scrotom that was previously stretched tight around the testicle (the result resembling a hairy raisin), which is his cue to tell his audience "now it's a raisin!". Usually done while drunk and on ritilan. Originated in Bloomsburg PA in the mid-1990's

Who wants to see grape to raisin? And have you ever seen my grandfather's watch?

Grape to raisin by The real Kyda August 11, 2010